NDLI: A simple method to significantly increase filaments’ length and ionization density

Content Provider	Springer Nature Link
Author	Kosareva, O. Roy, G. Kandidov, V. P. Pav, N. Kamali, Y. Lessard, F. Bégin, M. Daigle, J. F. Chin, S. L. Marceau, C.
Copyright Year	2008
Abstract	A simple method to produce longer filaments with higher ionization density in air by controlling the diameter of an aperture in the laser beam path is studied via an analysis of the backscattered N2 fluorescence collected by LIDAR. Significant increase in the fluorescence signal (approximately by a factor of five depending on the conditions) and an increased filament length was observed at an optimum diameter. 3D + time stochastic numerical simulations have shown that the optimum aperture size corresponds to the case of multiple filament ‘squeezing’ around the propagation axis forming the regularized elongated structure with higher overall amount of plasma. The optimum range of aperture sizes is the same for the initial transverse perturbation scale variation at least within a factor of three.
Ending Page	257
Page Count	9
Starting Page	249
File Format	PDF
ISSN	09462171
e-ISSN	14320649
Journal	Applied Physics B
Issue Number	2
Volume Number	94
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-10-31
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Optical Spectroscopy, Ultrafast Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers Quantum Optics, Quantum Electronics, Nonlinear Optics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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